Fully-automatic excrement analyzer

ABSTRACT

The present invention provides a full-automatic feces analyzer, comprising an automatic controller; at least one sample box for containing a feces sample; a sample box support for placing the sample box; a dilution and stirring unit for adding diluent into the feces sample in the sample box and performing stirring to obtain feces sample liquid; a physical detection unit for performing a physical detection on the feces sample liquid; at least one chemical detection unit for performing a chemical detection on the feces sample liquid, each chemical detection unit comprising a driving roller and a driven roller, a reagent strip roll being wound on the driven roller, an end portion of the reagent strip roll being fixed on the driving roller, and the reagent strip roll comprising a plurality of reagent strips which are abreast distributed and sequentially connected; and a sample sucking and adding unit for sucking the feces sample liquid and delivering the feces sample liquid to the physical detection unit and the chemical detection unit. The full-automatic feces analyzer can perform continuous physical detections and chemical detections to a plurality of feces samples, and the detection efficiency thereof is very high.

CROSS REFERENCE TO RELATED PATENT APPLICATION

The present application is the US national stage of PCT/CN2014/075231filed on Apr. 14, 2014 which claims the priorities of the Chinese patentapplications No. 201310529437.x filed on Oct. 30, 2013 and No.201320677151.1 filed Oct. 30, 2013, which applications are incorporatedherein by reference.

BACKGROUND OF THE PRESENT INVENTION

Field of Invention

The present invention relates to a detection instrument for a hospital,in particular to a full-automatic feces analyzer.

Description of Related Arts

Human feces is a mixture consisting of undigested food, food residueswhich are digested but not absorbed, secretions of a digestive system,exuviations of digestive tract mucosa, microorganisms, parasites and thelike. By detecting the human feces, information about digestive systemfunctions, pathological change, microorganism and parasite infection andthe like of a detected person can be obtained. Thus, feces detection(including physical detection and chemical detection) is one of threemajor conventional detections made by the hospital to patients. Atpresent, feces detection in the hospital is usually manual detection andmainly depends on the skill level and personal experience of laboratoryphysicians. As a result, a certain influence is caused to examinationresults and actual situations of detection cannot be very wellreflected. In addition, during detection, it is very insanitary.

In order to solve the problem, a Chinese invention patent CN101487845Bdiscloses an automatic detector for a feces sample, which comprises anautomatic controller; a sample box for containing a feces sample; adilution device for adding quantitative diluent into the feces sample; astirring and blending device for uniformly stirring the diluted fecessample; a detection unit used for detecting the feces sample andcomprising a physical detection unit and a chemical detection unit,wherein the physical detection unit comprises a counting cell, thechemical detection unit comprises a chemical detection chamber; and asample sucking and cleaning device. The automatic detector of a fecessample can automatically perform quantitative dilution, stirring andblending, sample sucking and detection and cleaning, decrease links ofcontact with an external environment and reduce pollution to theenvironment and the laboratory. However, since it performs chemicaldetection on the feces sample through the chemical detection chamberonly, the chemical detection cost is comparatively high, an operator isstill needed for observation, judgment and reading, the efficiency isvery low, and it does not facilitate detection to a plurality of fecessamples or multi-item chemical detection to a feces sample.

SUMMARY OF THE PRESENT INVENTION

In view of the disadvantages of the prior art, a purpose of the presentinvention is to provide a full-automatic feces analyzer which is low incost and high in detection efficiency.

In order to realize the purpose, the present invention provides afull-automatic feces analyzer, which comprises:

an automatic controller;

at least one sample box for containing a feces sample;

a sample box support for placing the sample box;

a dilution and stirring unit for adding diluent into the feces sample inthe sample box and performing stirring to obtain feces sample liquid;

a physical detection unit for performing a physical detection on thefeces sample liquid;

at least one chemical detection unit for performing a chemical detectionon the feces sample liquid, each chemical detection unit comprising adriving roller and a driven roller, a reagent strip roll being wound onthe driven roller, an end portion of the reagent strip roll being fixedon the driving roller, and the reagent strip roll comprising a pluralityof reagent strips which are abreast distributed and sequentiallyconnected; and

a sample sucking and adding unit for sucking the feces sample liquid anddelivering the feces sample liquid to the physical detection unit andthe chemical detection unit.

Preferably, the sample box support thereon is provided with a pluralityof holding chambers which have upward openings and are used for placingthe sample box, an inner wall of each holding chamber thereon isprovided with elastic clamping pieces, and after the sample box isplaced in the holding chamber, the sample box is in surface contact andinterference fit with the elastic clamping pieces.

Further, the full-automatic feces analyzer further comprises a barcodescanner, a barcode is stuck on a rear side of the sample box, a rearside of the sample box support is provided with barcode scanningopenings which are provided opposite to the sample boxes, and thebarcode scanner scans the barcodes on the sample boxes through thebarcode scanning openings.

Preferably, the full-automatic feces analyzer further comprises acharacter photographing device, a front side of the sample box supportis provided with character photographing openings which are providedopposite to the sample boxes, and the character photographing devicephotographs the feces samples in the sample boxes through the characterphotographing openings.

Further, the sample sucking and adding unit comprises a firstmanipulator which is located at the position of the physical detectionunit and can move upwards and downwards, and a second manipulator whichis located at the position of the chemical detection unit and can moveupwards, downwards, leftwards, rightwards, forwards and backwards, thefirst manipulator thereon is provided with a first sample suckingneedle, the first sample sucking needle is connected with a firstperistaltic pump, and the physical detection unit comprises a countingcell which is serially connected between the first sample sucking needleand the first peristaltic pump; the second manipulator thereon isprovided with a second sample sucking needle, the second sample suckingneedle is connected with a second peristaltic pump, the reagent stripthereon is provided with a sample adding area and a protruding portionwhich is provided opposite to the sample adding area, and during thechemical detection, the second sample sucking needle pierces theprotruding portion.

Preferably, the reagent strip is a plastic sealed reagent strip andcomprises a supporting plate, a cover plate and a test paper strip, thesupporting plate and the cover plate consist of plastic sealing films,edges of the supporting plate and the cover plate are plastic-sealedtogether, and the test paper strip is sealed between the supportingplate and the cover plate.

Further, the first peristaltic pump and the second peristaltic pump areconnected with a cleaning solution bucket, and cleaning solution iscontained in the cleaning solution bucket; the first manipulator thereonis provided with a first cleaning needle, the first cleaning needle isconnected with the cleaning solution bucket through a first cleaningpump and an end portion of the first cleaning needle extends to an outerwall of the first sample sucking needle; the second manipulator thereonis provided with a second cleaning needle, the second cleaning needle isconnected with the cleaning solution bucket through a second cleaningpump and an end portion of the second cleaning needle extends to anouter wall of the second sample sucking needle.

Further, the dilution and stirring unit comprises a third manipulatorwhich can move upwards and downwards, the third manipulator thereon inprovided with a stirring motor and a liquid adding needle, the samplebox therein is provided with a rotatable sampling spoon, and when thethird manipulator is lowered, an output shaft of the stirring motor iscoaxially connected with the sampling spoon and the liquid adding needleis inserted into the sample box.

Preferably, the liquid adding needle is connected with a diluent bucketthrough a third peristaltic pump and diluent is contained in the diluentbucket.

Preferably, a number of the chemical detection units is 5-7, itemsdetected by the reagent strips in each chemical detection unit aredifferent and a plurality of chemical detection units are transverselyabreast distributed.

Further, the full-automatic feces analyzer further comprises aphotoelectric positioning switch which is located above the reagentstrips, the driving roller is connected with a stepping motor, and boththe photoelectric positioning switch and the stepping motor areconnected with an automatic controller.

As described above, the full-automatic feces analyzer provided by thepresent invention has the following beneficial effects:

The full-automatic feces analyzer can automatically perform continuousphysical detections and chemical detections on a plurality of fecessamples, and the detection efficiency thereof is very high; in addition,by completing the chemical detection of the feces samples through thereagent strips, the detection cost is comparatively lower and thefull-automatic feces analyzer is suitable for popularization andapplication.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural schematic view (top view) of the presentinvention.

FIG. 2 is a structural schematic view of a sample box support and asample box in FIG. 1.

FIG. 3 is a rear view of FIG. 2.

FIG. 4 is a front view of FIG. 2.

FIG. 5 is an A-A sectional view of FIG. 1.

FIG. 6 is a B-B sectional view of FIG. 1.

FIG. 7 is a C-C sectional view of FIG. 1.

FIG. 8 is a pipe connection diagram of a physical detection unit.

FIG. 9 is a pipe connection diagram of a chemical detection unit.

FIG. 10 is a structural schematic view of a reagent strip in the presentinvention.

FIG. 11 is a structural schematic view of a reagent strip roll in thepresent invention.

DESCRIPTION OF COMPONENT REFERENCE SIGNS

1 sample box

2 sample box support

21 holding chamber

22 elastic clamping piece

23 barcode scanning opening

24 character photographing opening

3 dilution and stirring unit

31 third manipulator

32 stirring motor

33 liquid adding needle

4 chemical detection unit

41 driving roller

42 driven roller

43 reagent strip roll

44 reagent strip

441 sample adding area

442 protruding portion

443 supporting plate

444 cover plate

445 test paper strip

446 detection area

5 barcode scanner

6 character photographing device

7 sample sucking and adding unit

71 first manipulator

72 second manipulator

73 first sample sucking needle

74 first peristaltic pump

75 second sample sucking needle

76 second peristaltic pump

77 cleaning solution bucket

78 first cleaning needle

79 first cleaning pump

710 second cleaning needle

711 second cleaning pump

8 counting cell

9 photoelectric positioning switch

10 limiting switch

Detailed Description of the Preferred Embodiments

The present invention will be described through specific embodiments.One skilled in the art can easily understand other advantages andeffects of the present invention according to the contents disclosed bythe description.

It should be understood that structures, scales, sizes and the likeillustrated in the drawings annexed to the description are only used forcooperating with the contents disclosed by the description for the sakeof understanding and reading by one skilled in the art, are not used forlimiting the limited conditions which can be implemented by the presentinvention, and thus have no technical substantive meanings. Anymodification to structures, change to scale relations or adjustment tosizes without influencing the effects which can be produced by thepresent invention and the purposes which can be achieved by the presentinvention shall still fall into the range which can be covered by thetechnical contents disclosed by the present invention. In addition,terms such as “above”, “below”, “left”, “right”, “middle” and the likeused in the description are only used for facilitating the clearness ofdescription and are not used for limiting the range which can beimplemented by the present invention. Change or adjustment to relativerelations without substantively changing the technical contents shallalso be considered as the range which can be implemented the presentinvention.

As shown in FIG. 1, the present invention provides a full-automaticfeces analyzer, which comprises:

an automatic controller;

at least one sample box 1 for containing a feces sample;

a sample box support 2 for placing the sample box 1;

a dilution and stirring unit 3 for adding diluent into the feces samplein the sample box 1 and performing stirring to obtain feces sampleliquid;

a physical detection unit for performing physical detection on the fecessample liquid;

at least one chemical detection unit 4 for performing chemical detectionon the feces sample liquid, each chemical detection unit comprising adriving roller 41 and a driven roller 42, as shown in FIG. 5, a reagentstrip roll 43 being wound on the driven roller 42, an end portion of thereagent strip roll 43 being fixed on the driving roller 41, and thereagent strip roll comprising a plurality of reagent strips 44 which areabreast distributed and sequentially connected, preferably, a reagentstrip roll 43 therein having at least more than 200 reagent strips 44,more preferably, 200, 500 or 800 servings; and

a sample sucking and adding unit 7 for sucking the feces sample liquidand delivering the feces sample liquid to the physical detection unitand the chemical detection unit 4.

In the full-automatic feces analyzer, the feces sample is collected andcontained through the sample box 1, then the sample box 1 is deliveredthrough the sample box support 2 into the analyzer for dilution andstirring, subsequently the feces sample liquid is delivered through thesample sucking and adding unit 7 to the physical detection unit forphysical detection and to the chemical detection unit 4 for chemicaldetection, and a plurality of reagent strips 44 are sequentiallyconnected at the position of the chemical detection unit 4, such thatcontinuous detections can be performed on a plurality of feces samplesand the detection efficiency is greatly improved. In addition, since thereagent strips 44 are adopted for performing the chemical detection offeces, the detection cost is further reduced. Preferably, thefull-automatic feces analyzer further comprises a push-in manipulator, atransfer manipulator and a push-out manipulator connected with thesample box support 2, and the push-in manipulator, the transfermanipulator and the push-out manipulator are in stepping drive, i.e.,three sets of stepping motors liner feeding mechanisms are adopted todrive the sample box support 2, wherein the push-in manipulator is usedfor pushing the sample box support 2 into the analyzer, and the transfermanipulator is used for sequentially transferring the sample box support2 to the dilution and stirring unit 3 and the physical detection unit;and after all detections are completed, the push-out manipulator pushesthe sample box support 2 out of the analyzer.

Preferably, a number of the chemical detection units 4 is 5-7, itemsdetected by the reagent strips 44 in each chemical detection unit 4 aredifferent, a plurality of chemical detection units 4 are transverselyabreast distributed, the plurality of chemical detection units 4 areused for simultaneously performing different chemical detections on thefeces sample, for example, a reagent strip roll 43 for Fob, rotavirusand helicobacter pylori can be selected and used, and during thechemical detection, the sample sucking and adding unit 7 respectivelydrops sucked feces sample liquid into reagent strips 44 for the threeitems and thereby the detection of the three items, i.e., Fob, rotavirusand helicobacter pylori can be simultaneously performed on the fecessample. In addition, in this embodiment, the full-automatic fecesanalyzer further comprises two standby chemical detection units 4, noreagent strip roll 43 is installed in the two chemical detection units4, and the two chemical detection units are empty reagent positions;after a detection personnel is on duty and powers on the analyzer, ifthe detection personnel finds that a number of residual only Fob reagentstrips is only 80 servings (i.e., 80) and a number of feces samples onwhich Fob detection needs to be performed is 300, the detectionpersonnel can select to install a Fob reagent strip roll in any one ofthe two standby chemical detection units 4, and thus the Fob detectionon all feces samples can be completed; and if a number of Fob reagentstrips in the analyzer is 500 servings after the detection personnelpowers on the analyzer, the detection can be immediately performedwithout using the standby chemical detection units 4, and the analyzerdoes not need to be shut down for changing reagents or samples duringthe detection.

Preferably, as shown in FIG. 2, the sample box support 2 thereon isprovided with a plurality of holding chambers 21 which have upwardopenings and are used for placing the sample boxes 1, the holdingchambers 21 adapt to the sample boxes 1, an inner wall of each holdingchamber 21 thereon is provided with an elastic clamping piece 22, andafter the sample box 1 is placed in the holding chamber 21, the samplebox 1 is in surface contact and interference fit with the elasticclamping piece 22, such that the sample box 1 is fixed in the holdingchamber 21 to prevent the sample box 1 from moving, floating, deviatingand the like; and moreover, the outer wall of the sample box 1 is insurface contact with the inner wall of the elastic clamping piece 22,such that the contact area therebetween is increased to guarantee thecentering effect of the sample box 1 and further guarantee the smoothproceedings of adding, stirring and sucking the sample in the sample box1. In addition, in this embodiment, a number of the elastic clampingpieces 22 is two, the two elastic clamping pieces 22 are respectivelylocated at an upper end and a lower end of each holding chamber 21, andthe elastic clamping pieces 22 are made of high-elasticity-modulusmaterials such as aramid fibers, polyethylene fibers, high-modulus glassfibers and high-modulus carbon fibers to increase the wear resistance ofthe elastic clamping pieces 22, prolong the service life of the elasticclamping pieces 22 and further prolong the service life of the entiresample box support 2.

Further, the full-automatic feces analyzer further comprises a barcodescanner 5, a barcode is stuck on a rear side of the sample box 1, a rearside of the sample box support 2 is provided with barcode scanningopenings 23 which are provided relative to the sample boxes 1, as shownin FIG. 2 and FIG. 3, the barcode scanning openings 23 are communicatedwith the holding chambers 21 and extend upwardly through the sample boxsupport 2, the barcode scanner 5 scans the barcodes on the sample boxesthrough the barcode scanning openings. Preferably, the full-automaticfeces analyzer further comprises a character photographing device 6, afront side of the sample box support 2 is provided with characterphotographing openings which are located relative to the sample boxes,as shown in FIG. 2 and FIG. 4, the character photographing openings 24are communicated with the holding chambers 21, and the characterphotographing device 6 photographs the feces samples in the sample boxes1 through the character photographing openings 24 to observe the shapesand colors of the feces samples. The barcode scanner 5 and the characterphotographing device 6 are longitudinally distributed along a movingdirection of the sample box support 2, such that when the transfermanipulator transfers the sample box support 2, each sample box 1 in thesample box support 2 firstly passes through the barcode scanner 5 toread information of a patient, and a subsequent detection result isstored under a directory of the information of the barcode; andthereafter the sample box 1 sequentially passes through the characterphotographing device 6, the dilution and stirring unit 3 and thephysical detection unit.

Further, as shown in FIG. 6, the dilution and stirring unit 3 comprisesa third manipulator 31 which can move upwards and downwards, the thirdmanipulator 31 thereon in provided with a stirring motor 32 and a liquidadding needle 33, the sample box 1 therein is provided with a rotatablesampling spoon, and when the third manipulator 3 is lowered, an outputshaft of the stirring motor 32 is coaxially connected with the samplingspoon and the liquid adding needle 33 is inserted into the sample box 1.Preferably, the liquid adding needle 33 is connected with a diluentbucket through a third peristaltic pump and diluent is contained in thediluent bucket. In addition, for the structure of the sample box 1, areference can be made to a Chinese utility model patent CN202735110U;and for the connection structure of the sample box 1 and the stirringmotor 32, a reference can be made to a Chinese invention patentCN101487845B. The transfer manipulator transfers the sample box support2 to the position of the dilution and stirring unit 3, and the samplebox 1 on the sample box support 2 is located below the liquid addingneedle 33; the third manipulator 31 moves downwards, an input shaft ofthe stirring motor 32 is coaxially connected with the sampling spoon,and the liquid adding needle 33 is inserted into the sample box 1; thethird peristaltic pump rotates and the diluent is added into the samplebox 1 through the liquid adding needle 33; and the stirring motor 32rotates to drive the sampling spoon to rotate, such that thequantitative diluent adding and reasonable stirring of the feces sampleare completed.

Further, as shown in FIG. 7, the sample sucking and adding unit 7comprises a first manipulator 71 which is located at the position of thephysical detection unit and can move upwards and downwards, and a secondmanipulator 72 which is located at the position of the chemicaldetection unit and can move upwards, downwards, leftwards, rightwards,forwards and backwards, the first manipulator 71 thereon is providedwith a first sample sucking needle 73, the first sample sucking needle73 is connected with a first peristaltic pump 74, and as shown in FIG.8, the physical detection unit comprises a counting cell 8 which isserially connected between the first sample sucking needle 73 and thefirst peristaltic pump 74; the second manipulator 72 thereon is providedwith a second sample sucking needle 75, the second sample sucking needle75 is connected with a second peristaltic pump 76, as shown in FIG. 9,the reagent strip 44 thereon is provided with a sample adding area 441and a protruding portion 442 which is located opposite to the sampleadding area 441, and as shown in FIG. 10, during the chemical detection,the second sample sucking needle pierces the protruding portion 442. Thesecond manipulator 72 is a three-dimensional manipulator, can move 800mm in an X direction, can move 300 mm in a Y direction and can move 100mm on a Z direction.

In addition, in order to further reduce the detection cost, for the sakeof reduction of the cost of the reagent strips 44 in the presentinvention, the reagent strips 44 are designed to be plastic sealedreagent strips 44, as shown in FIG. 10 and FIG. 11, each plastic sealedreagent strip 4 comprises a supporting plate 443, a cover plate 444 anda test paper strip 445, the supporting plate 443 and the cover plate 444consist of plastic sealing films, edges of the supporting plate 443 andthe cover plate 444 are plastic-sealed together, the test paper strip445 is sealed between the supporting plate 443 and the cover plate 444,and the test paper strip 445 thereon is further provided with adetection area 446. Since the supporting plate 443 and the cover plate444 consist of the plastic sealing films, the manufacturing cost of thereagent strips 44 is effectively reduced and the economic benefit isimproved. Moreover, since the edges of the supporting plate 443 and thecover plate 444 are plastic-sealed together and the test paper strip 445is sealed between the supporting plate 443 and the cover plate 444, thedryness of the reagent strips 44 is effectively guaranteed, such thatthe reagent strips 44 can be exposed in air for a long time withoutbeing damped. Preferably, two adjacent plastic sealed reagent strips 44are connected through a tear line, such that a single plastic sealedreagent strip 44 can be conveniently torn off and used separately tosatisfy demands of different places.

During the physical detection, the sample box 1 which contains the fecessample liquid is located below the first sample sucking needle 73, thefirst manipulator 71 moves downwards, the first sample sucking needle 73is inserted into the sample box 1, the first peristaltic pump 74 rotatesforwardly, and the feces sample liquid is sucked out from the sample box1 and enters the counting cell 8 through the first sample sucking needle73 to perform a microscopic detection; and a microscopic examinationmodule has a pre-adjustment focusing function and the counting cell 8can realize multi-point movement in a horizontal direction. During thechemical detection, the second manipulator 72 moves to enable the secondsample sucking needle 75 to be inserted into the sample 1, the secondperistaltic pump 76 rotates forwardly and the feces sample liquid issucked from the sample box 1 into the second sample sucking needle 75;and the second manipulator 72 moves again to enable the second samplesucking needle 75 to be inserted into the protruding portion 442 on thereagent strip 44, the second peristaltic pump 76 rotates reversely, andthe feces sample liquid in the second sample sucking needle 75 isdropped onto the sample adding area 441 of the reagent strip 44 toperform the chemical detection. In this embodiment, the secondmanipulator 72 thereon is provided with a photographing camera which isused for photographing the reagent strip 44 after reactions, theautomatic controller then controls a judgment and reading software tojudge and read the obtained photo to make a qualitative conclusion toobtain a chemical detection result, so as to prevent errors from beingcaused by artificial judgment and reading, improve the detectionaccuracy and speed and realize an automatic detection. Preferably, aphotoelectric sensor is provided at the position of the physicaldetection unit and is used for confirming the position of the sample box1.

After the detection of the feces sample liquid is completed, detectionshall not be performed on next feces sample liquid until the inner wallsand outer walls of the first sample sucking needle 73 and the secondsample sucking needle 75 are cleaned. In this embodiment, a cleaningstructure is as shown in FIG. 8 and FIG. 9, the first peristaltic pump74 and the second peristaltic pump 75 are connected with a cleaningsolution bucket 77, and cleaning solution is contained in the cleaningsolution bucket 77; the first manipulator 71 thereon is provided with afirst cleaning needle 78, the first cleaning needle 78 is connected withthe cleaning solution bucket 77 through a first cleaning pump 79 and anend portion of the first cleaning needle 78 extends to an outer wall ofthe first sample sucking needle 73; and the second manipulator 72thereon is provided with a second cleaning needle 710, the secondcleaning needle 710 is connected with the cleaning solution bucket 77through a second cleaning pump 711 and an end portion of the secondcleaning needle 710 extends to an outer wall of the second samplesucking needle 75.

After the physical detection is completed, the first peristaltic pump 74rotates reversely, and the cleaning solution in the cleaning solutionbucket 77 is sucked inside and enters the first sample sucking needle 73through the counting cell 8 to clean the inner walls of the countingcell 8 and the first sample sucking needle 73; the first cleaning pump79 rotates, and the cleaning solution is sucked inside by the firstcleaning needle 78 and flows downwards along the outer wall of the firstsample sucking needle 73 to clean the outer wall of the first samplesucking needle 73. After the chemical detection is completed, the secondperistaltic pump 76 rotates reversely, and the cleaning solution in thecleaning solution bucket 77 is sucked into the second sample suckingneedle 75 to clean the inner wall of the second sample sucking needle75; the second cleaning pump 711 rotates, and the cleaning solution issucked inside by the second cleaning needle 710 and flows downwardsalong the outer wall of the second sample sucking needle 75 to clean theouter wall of the second sample sucking needle 75. Waste liquid obtainedafter cleaning the first sample sucking needle 73 and the second samplesucking needle 75 flows into a waste liquid bucket to facilitatecentralized discharge of the waste liquid, and the waste liquid buckettherein is provided with a liquid level switch which is used forrealizing an upper limit alarm, i.e., when a liquid level of liquid inthe waste liquid bucket is higher than the liquid level switch, theliquid level switch is triggered and the automatic controller gives outan alarm according to a trigger signal. In addition, the diluent bucketand the cleaning solution bucket 77 therein are respectively providedwith a liquid level switch which is used for a lower limit alarm, i.e.,when a liquid level of the diluent in the diluent bucket is lower thanthe liquid level switch or a liquid level of the cleaning solution inthe cleaning solution bucket 77 is lower than the liquid level switch,the liquid level switch is triggered and the automatic controller givesout an alarm according to a trigger signal.

Preferably, when the first sample sucking needle 73 and the secondsample sucking needle 75 are cleaned, the automatic controller controlsthe first peristaltic pump 74, the second peristaltic pump 76, the firstcleaning pump 79 and the second cleaning pump 711 to rotateintermittently such that a section of cleaning solution, a section ofair, a section of cleaning solution, a section of air . . . aredistributed at intervals in a cleaning pipe, the cleaning solution isdelivered out intermittently, internal pressure of the pipe is increasedunder the effect of air to enable the cleaning solution to flush theinner wall and outer wall of the first sample sucking needle 73 and theinner wall and outer wall of the second sample sucking needle 75 in ablasting manner, the flushing force is great and thus the cleaningeffect is guaranteed.

Further, the full-automatic feces analyzer further comprises aphotoelectric positioning switch 9 which is located above the reagentstrips 44, the driving roller 41 is connected with a stepping motor, andboth the photoelectric positioning switch 9 and the stepping motor areconnected with an automatic controller; and the stepping motor drivesthe driving roller 41 to roll in a stepping manner, and under the effectof the photoelectric positioning switch 9, the reagent strip roll 43 isguaranteed to advance once according to a unit of one reagent strip 44when the roller rotates once.

Before the full-automatic analyzer provided by the present inventionworks, the push-in manipulator stays at the forefront of the analyzer,the transfer manipulator stays on the leftmost side of the analyzer, thethird manipulator 31 stays at the topmost position, the firstmanipulator 71 stays at the topmost position of the physical detectionunit, the second manipulator 72 stays at the topmost position of thereagent strip 44, a reagent cassette stays at an initial position or amemory position, and the push-out manipulator stays at the rear end ofthe analyzer. During working, a plurality of sample boxes 1 are manuallyput into the sample box support 2, the sample boxes 1 thereinrespectively contain feces samples of different patients, as shown inFIG. 1, the push-in manipulator pushes the sample box support 2 into theanalyzer, and from the angle of view of FIG. 1, the sample box support 2enters the analyzer from front to rear; when the sample box support 2touches a limiting switch 10 at the rear end of the analyzer, thepush-in manipulator stops moving, and the transfer manipulatortransversely transfers the sample box support 2 from right to left in astepping manner to sequentially pass through the barcode scanner 5, thecharacter photographing device 6, the dilution and stirring unit 3 andthe physical detection unit; and in a process of continuous steppingtransfer, the feces sample liquid at the position of the physicaldetection unit is subjected to the physical detection and chemicaldetection, and simultaneously the feces sample at the position of thedilution and stirring unit 3 is diluted and stirred, such that theanalyzer can continuously perform detections on a plurality of differentfeces samples, the detection speed can reach 120 feces samples per hourand thus the detection efficiency is greatly improved. Preferably, theanalyzer is further equipped with a computer and a printer, and theprinter is used for printing the detection result of a feces sample.

To sum up, the present invention effectively overcomes variousdisadvantages in the prior art and thus has a great industrialutilization value.

The above-mentioned embodiments are just used for exemplarily describingthe principle and effect of the present invention instead of limitingthe present invention. One skilled in the art can make modifications orvariations to the above-mentioned embodiments without departing from thespirit and the range of the present invention. Therefore, all equivalentmodifications or variations made by those who have common knowledge inthe art without departing from the spirit and technical conceptdisclosed by the present invention shall be still covered by the claimsof the present invention.

What is claimed is:
 1. An automatic feces analyzer, comprising: anautomatic controller; at least one sample box for containing a fecessample; a sample box support for supporting the sample box; a dilutionand stirring unit for adding diluent into the feces sample in the samplebox and stirring the feces sample and diluent to obtain feces sampleliquid; a physical detection unit for performing a physical detection onthe feces sample liquid, at least one chemical detection unit forperforming a chemical detection on the feces sample liquid, eachchemical detection unit comprising a driving roller and a driven roller,a reagent strip roll being wound on the driven roller, an end portion ofthe reagent strip roll being fixed on the driving roller, and thereagent strip roll comprising a plurality of reagent strips sequentiallyconnected; and a sample sucking and adding unit for sucking the fecessample liquid and delivering the feces sample liquid to the physicaldetection unit and the chemical detection unit; the sample sucking andadding unit comprises a first manipulator which is located at theposition of the physical detection unit and can move upwards anddownwards, and a second manipulator which is located at the position ofthe chemical detection unit and can move upwards, downwards, leftwards,rightwards, forwards and backwards, the first manipulator thereon isprovided with a. first sample sucking needle, the first sample suckingneedle is connected with a first peristaltic pump, and the physicaldetection unit comprises a counting cell which is serially connectedbetween the first sample sucking needle and the first peristaltic pump;the second manipulator thereon is provided with a second sample suckingneedle, the second sample sucking needle is connected with a secondperistaltic pump, the reagent strip having a test paper strip sealed bya sealing film in a protruding portion, the second sample sucking needlemovable by the second manipulator from a first position above theprotruding portion, to a second position wherein a lower end of thesecond sample sucking needle is pierced through the sealing film andinto the protruding portion.
 2. The feces analyzer according to claim 1,characterized in that the sample box support has a plurality of holdingchambers which have upward openings for receiving the sample box, aninner wall of each holding chamber having elastic clamping piecesproviding an interference fit with the sample box.
 3. The feces analyzerof claim 1 further comprising a barcode scanner, a barcode on a rearside of the sample box, and barcode scanning openings in a rear side ofthe sample box to allow the bar code scanner to scan the barcodes on thesample boxes through the barcode scanning openings.
 4. The fecesanalyzer of claim 1 further including a character photographing device,and character photographing openings in a front side of the sample boxsupport opposite to the sample boxes, to allow the characterphotographing device to photograph the feces samples in the sample boxesthrough the character photographing openings.
 5. The feces analyzeraccording to claim 1, characterized in that the first peristaltic pumpand the second peristaltic pump are connected with a cleaning solutionbucket, and cleaning solution is contained in the cleaning solutionbucket; the first manipulator is provided with a first cleaning needle,the first cleaning needle is connected with the cleaning solution bucketthrough a first cleaning pump and an end portion of the first cleaningneedle extends to an outer wall of the first sample sucking needle, thesecond manipulator is provided with a second cleaning needle, the secondcleaning needle is connected with the cleaning solution bucket through asecond cleaning pump and an end portion of the second cleaning needleextends to an outer wall of the second sample sucking needle.
 6. Thefeces analyzer according to claim 1, characterized in that the dilutionand stirring unit comprises a third manipulator which can move upwardsand downwards, the third manipulator in provided with a stirring motorand a liquid adding needle, the sample box is provided with a rotatablesampling spoon, and when the third manipulator is lowered, an outputshaft of the stirring motor is coaxially connected with the samplingspoon and the liquid adding needle is inserted into the sample box. 7.The feces analyzer according to claim 6, characterized in that theliquid adding needle is connected with a diluent bucket through a thirdperistaltic pump and diluent is contained in the diluent bucket.
 8. Thefeces analyzer according to claim 1 having 5-7 chemical detection units,items detected by the reagent strips in each chemical detection unit aredifferent and a plurality of chemical detection units are transverselyabreast distributed.
 9. The feces analyzer according to claim 1 furthercomprising a photoelectric positioning switch located above the reagentstrips, the driving roller is connected with a stepping motor, and boththe photoelectric positioning switch and the stepping motor areconnected with an automatic controller.
 10. An automatic feces analyzer,comprising: an automatic controller; at least one sample box forcontaining a feces sample; a sample box support for supporting thesample box; a dilution and stirring unit for adding diluent into thefeces sample in the sample box and stirring the feces sample and diluentto obtain feces sample liquid; a physical detection unit for physicallydetecting the feces sample liquid; one or more chemical detection unitsfor performing a chemical detection on the feces sample liquid, eachchemical detection unit comprising a reagent strip roll having aplurality of reagent strips; a sample adding unit for delivering thefeces sample liquid to the physical detection unit and the chemicaldetection unit, the sample adding unit having a first manipulatoradjacent to the physical detection unit, the first manipulator having afirst sampling needle connected to a first peristaltic pump forproviding the feces sample liquid to the physical detection unit, thesample adding unit also having a second manipulator having a secondsampling needle connected to a second peristaltic pump for providing thefeces sample liquid to the chemical detection unit; the reagent striphaving a test paper strip sealed in a protruding portion by a sealingfilm, the second sampling needle movable by the second manipulator froma first position above the protruding portion, to a second positionwherein a lower end of the second sampling needle is pierced through thesealing film and into the protruding portion.